Question

Let f(x)=-4+7 and g(x)= 10x-6 find f(g(x))

-40x +24
-40x + 31
-40x + 64
-40x + 70

Answer 1

f(x) = -4x + 7; g(x) = 10x - 6

f(g(x)) = -4(10x - 6) + 7 = -40x + 24 + 7 = -40x + 31

Answer 2

f(x) = -4x + 7

g(x) = 10x - 6

f [g(x)] = - 4[10x - 6] + 7 = -40x + 24 + 7 = -40x + 31

Answer: the second option of the list.